In that example Port "01620459-aa05-4a25-9bf3-41a9390d94b1" is configured without tag, which means of course that the network is not working in virtual machine. After restart of neutron ovs agent service, it is recreated with tag and the network is connected. It's Openvswitch 2.7 and Ocata version of hyperv compute on Hyper-V Server 2016.